28352550 has 24 divisors (see below), whose sum is σ = 70314696. Its totient is φ = 7560640.

The previous prime is 28352521. The next prime is 28352557. The reversal of 28352550 is 5525382.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28352557) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 94359 + ... + 94658.

It is an arithmetic number, because the mean of its divisors is an integer number (2929779).

Almost surely, 2^28352550 is an apocalyptic number.

28352550 is an abundant number, since it is smaller than the sum of its proper divisors (41962146).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28352550 is a wasteful number, since it uses less digits than its factorization.

28352550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189032 (or 189027 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 28352550 is about 5324.7112597774. The cubic root of 28352550 is about 304.9280489598.

The spelling of 28352550 in words is "twenty-eight million, three hundred fifty-two thousand, five hundred fifty".